Fix user_is_authenticated() for < 1.10
Fix user_is_authenticated() for < 1.10

django-oscar/django-oscar,solarissmoke/django-oscar,solarissmoke/django-oscar,solarissmoke/django-oscar,sonofatailor/django-oscar,solarissmoke/django-oscar,sasha0/django-oscar,sonofatailor/django-oscar,django-oscar/django-oscar,sonofatailor/django-oscar,sasha0/django-oscar,sasha0/django-oscar,django-oscar/django-oscar,sasha0/django-oscar,django-oscar/django-oscar,sonofatailor/django-oscar